Rush maps, dvars, and credits

Supported maps and map entity credits:
	Af_caves - Rendflex
	Airport - Rendflex and Rechyyy (with help from DidUknowIPwn)
	Contingency - LoserSM & Opferklopfer
	Co_hunted - Rendflex
	Dc_whitehouse - Rendflex
	Dcburning - Rendflex
	Estate - Momo5502, Dasfonia, Rendflex and BassPro241
	Favela - Tronds
	Gulag - Rendflex
	Oilrig - Rendflex
	Roadkill - Rendflex and STvLKER
	So_ghillies - Rendflex and Slash


Dvars:
Scr_rush_bfmenu //Set to 0 to disable the Battlefield-inspired spawn menu. Defaults to 1.
Scr_rush_forceRespawnTimer //Time in seconds before a player is forced to spawn, defaults to 7. Only used for the bfmenu mentioned above.
Scr_rush_bombtimer //Bomb timer time in seconds, defaults to 45.
Scr_rush_planttime //Plant time in seconds, defaults to 5.
Scr_rush_defusetime //Defuse time in seconds, defaults to 5.
Scr_rush_ticketmultiplier //Multiply all gained attackers' tickets by player size, defaults to 1.
Scr_rush_tickets //Attacker starting tickets, defaults to 7. Recommended to modify if ticketmultiplier is disabled.
Scr_rush_bombpoints //The amounts of attacker tickets set to when a bomb is destroyed, defaults to 7.
Scr_rush_spawnMethod //Spawn method, defaults to 2. 0 = Simple, 1 = Experimental parachute. 2 = Advanced. Recommended to not modify.
Scr_rush_mapVisions //Set to 0 to disable the location-based player visions (Colour changes, such as brightness and contrast - might cause slight lag for low-end PCs)

Other credits:
EMZ for the menus.
NTAuthority for making these kinds of mods possible, and discovering that SP vehicles work in MP.